Long bolts and long screws are elongated threaded fasteners with extended shanks, designed to connect thick components, assemble long‑span structures, or reach deep mounting positions.
Long Bolt
A long bolt is an extended version of a standard bolt, usually with a full or partial threaded shaft and a hexagonal head. It is used with a matching nut to clamp multiple layers or thick workpieces tightly. Long bolts provide high tensile strength and stability, and are widely applied in steel structures, towers, machinery bases, pipeline brackets, and large equipment assembly.
Long Screw
A long screw features an extended threaded body and can be driven directly into pre‑tapped holes or self‑tapped into materials such as wood, plastic, and sheet metal. Compared with long bolts, it is more convenient for single‑sided installation. Long screws are commonly used in furniture assembly, decoration, electrical enclosures, and mechanical components that require deep fastening.
Common Features
Extended length for deep or multi‑layer assembly
High rigidity and load‑bearing capacity
Removable and reusable connections
Good resistance to vibration and loosening
Applications
Long bolts and screws are widely used in construction engineering, mechanical equipment, furniture manufacturing, automotive engineering, power facilities, and various industrial assembly scenarios where standard‑length fasteners cannot meet the fastening depth.